All Questions
247
questions
7
votes
7
answers
590
views
Build the first 6 letters of an Italian codice fiscale (tax identification number)
Given a single string with a person's name and surname, output the first 6 characters of their codice fiscale.
Codice fiscale
Codice fiscale is a 16-character long alphanumeric string that identifies (...
- 3,684
9
votes
14
answers
814
views
Convert CSV tables to MediaWiki tables
Input a CSV table, like this:
data00,data01,data02,...,data0m
data10,data11,data12,...,data1m
...
datan0,datan1,datan2,...,datanm
The cells in the CSV table is ...
- 1,115
12
votes
3
answers
1k
views
HTML Table Parser
Input a strict subset of HTML <table> string representation as defined below. Output parsed table, while any cells who span multiple rows or columns, record ...
- 35k
11
votes
12
answers
773
views
Rockstar Poetic Number Literals!
The Rockstar programming language has "poetic number literals", allowing you to assign nonnegative, finite (at least one Rockstar interpreter supports infinity) numbers to variables without ...
- 1,391
2
votes
2
answers
819
views
Compiler for LaTeX
Problem:
Given a string representing a mathematical expression with constants (pi, e, psi, i), basic arithmetic operations (+, -, *, /), parentheses, fractions, and exponentiation, write a program or ...
- 383
8
votes
11
answers
2k
views
Shortest path to open a letter lock
This quite literally came to me in a dream.
A common combination padlock design has letters on the dials so you can set the combination to a word. Unfortunately, I can't read, but I can count. ...
- 4,155
23
votes
12
answers
6k
views
How long is this string, really?
In most programming languages, the string Hello, World! can be represented as "Hello, World!". But if you want to ...
- 39.2k
10
votes
6
answers
745
views
Convert from Spoken Binary
This is an exact inverse of the question Convert to Spoken Binary. This introduction is copied from there.
Introduction
In the video the best way to count, binary is proposed as the
best system of ...
- 2,093
14
votes
17
answers
3k
views
What's the character limit of this text field? [duplicate]
Someone I know has no coding experience, but has proposed an algorithm* to determine the character limit of text fields they find online. They copy a string containing the numbers from 1 to 1,000 ...
- 653
0
votes
1
answer
87
views
Parse nested absolute values 2 [duplicate]
Looking at
Arnauld's answer, it seems like this version is not really more difficult than the other version, so I made it an optional requirement of the other challenge
The absolute value of a number \...
- 6,035
14
votes
7
answers
841
views
Parse nested absolute values
The absolute value of a number \$x\$ is normally written as \$|x|\$. The left and right side of the absolute value uses the same symbol, so it is not immediately obvious how to parse nested absolute ...
- 6,035
13
votes
11
answers
2k
views
Ungolf the Wind
Weather conditions at airports are reported to pilots in METAR (METeorological Aerodrome Report) format. This format could be described as being "golfed." Here are some examples:
...
- 1,620
6
votes
0
answers
279
views
Write a proof checker for first order logic
This originally came from Give the best Chaitin incompleteness bound, but I realized that there was a fragment of this problem which still potentially gives a good coding challenge.
First Order Logic ...
- 221
8
votes
3
answers
641
views
Expand Emmet HTML Abbreviations
Emmet is a text-editor and IDE plugin for writing HTML code using much fewer keypresses. You might think of it like a code-golfing HTML preprocessor. Its syntax is based on CSS selectors.
Your ...
- 8,612
13
votes
4
answers
537
views
Golf a LaTeΧ math expression
A problem I sometimes encounter is that when writing comments using LaTeX, the comment is too long. Today you will solve this, by writing code which, given a LaTeX math expression, will produce the ...
- 10.6k